The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation
The purpose of this study is to elucidate flame propagation behavior under the application of uniform and non-uniform electric fields by using a constant volume vessel. Two electrodes are attached to the ceiling and the bottom of the combustion chamber and electric fields are applied in the directio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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The Japan Society of Mechanical Engineers
2008-03-01
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| Series: | Journal of Thermal Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jtst/3/2/3_2_254/_pdf/-char/en |
| _version_ | 1819205367760945152 |
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| author | Shinichi MORIYA Koji YOSHIDA Hideo SHOJI Akira IIJIMA |
| author_facet | Shinichi MORIYA Koji YOSHIDA Hideo SHOJI Akira IIJIMA |
| author_sort | Shinichi MORIYA |
| collection | DOAJ |
| description | The purpose of this study is to elucidate flame propagation behavior under the application of uniform and non-uniform electric fields by using a constant volume vessel. Two electrodes are attached to the ceiling and the bottom of the combustion chamber and electric fields are applied in the direction of the chamber's vertical axis. A Nd:YAG laser is used to apply laser-induced breakdown for igniting the mixture at the center of the combustion chamber. A homogeneous propane-air mixture is supplied at three equivalence ratios of 0.7, 1.0 and 1.5 and ignited under atmospheric pressure and room temperature. Under a uniform electric field, the premixed flame rapidly propagates both upward and downward, forming a cylindrically shaped flame front. The maximum combustion pressure decreases with increasing input voltage because the flame front reaches the chamber wall rapidly and the heat loss to electrodes increases. However, the combustion duration is little affected by the input voltage. In a non-uniform electric field, the flame propagation velocity in the downward direction increases. Combustion is markedly enhanced when the input voltage is larger than 12 kV because a brush corona discharge occurs and intense turbulence is generated at the flame front. For both uniform and non-uniform electric fields, the horizontal flame velocity is almost the same. |
| first_indexed | 2024-12-23T04:50:35Z |
| format | Article |
| id | doaj.art-0bec9af5c2134a2baf58b20510d6b612 |
| institution | Directory Open Access Journal |
| issn | 1880-5566 |
| language | English |
| last_indexed | 2024-12-23T04:50:35Z |
| publishDate | 2008-03-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Thermal Science and Technology |
| spelling | doaj.art-0bec9af5c2134a2baf58b20510d6b6122022-12-21T17:59:29ZengThe Japan Society of Mechanical EngineersJournal of Thermal Science and Technology1880-55662008-03-013225426510.1299/jtst.3.254jtstThe Effect of Uniform and Non-Uniform Electric Fields on Flame PropagationShinichi MORIYA0Koji YOSHIDA1Hideo SHOJI2Akira IIJIMA3Graduate School of Nihon UniversityCollege of Science and Technology, Nihon UniversityCollege of Science and Technology, Nihon UniversityCollege of Science and Technology, Nihon UniversityThe purpose of this study is to elucidate flame propagation behavior under the application of uniform and non-uniform electric fields by using a constant volume vessel. Two electrodes are attached to the ceiling and the bottom of the combustion chamber and electric fields are applied in the direction of the chamber's vertical axis. A Nd:YAG laser is used to apply laser-induced breakdown for igniting the mixture at the center of the combustion chamber. A homogeneous propane-air mixture is supplied at three equivalence ratios of 0.7, 1.0 and 1.5 and ignited under atmospheric pressure and room temperature. Under a uniform electric field, the premixed flame rapidly propagates both upward and downward, forming a cylindrically shaped flame front. The maximum combustion pressure decreases with increasing input voltage because the flame front reaches the chamber wall rapidly and the heat loss to electrodes increases. However, the combustion duration is little affected by the input voltage. In a non-uniform electric field, the flame propagation velocity in the downward direction increases. Combustion is markedly enhanced when the input voltage is larger than 12 kV because a brush corona discharge occurs and intense turbulence is generated at the flame front. For both uniform and non-uniform electric fields, the horizontal flame velocity is almost the same.https://www.jstage.jst.go.jp/article/jtst/3/2/3_2_254/_pdf/-char/enpre-mixed combustionhigh-voltage electric fieldcorona dischargelaser ignitionlaser-induced breakdown |
| spellingShingle | Shinichi MORIYA Koji YOSHIDA Hideo SHOJI Akira IIJIMA The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation Journal of Thermal Science and Technology pre-mixed combustion high-voltage electric field corona discharge laser ignition laser-induced breakdown |
| title | The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation |
| title_full | The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation |
| title_fullStr | The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation |
| title_full_unstemmed | The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation |
| title_short | The Effect of Uniform and Non-Uniform Electric Fields on Flame Propagation |
| title_sort | effect of uniform and non uniform electric fields on flame propagation |
| topic | pre-mixed combustion high-voltage electric field corona discharge laser ignition laser-induced breakdown |
| url | https://www.jstage.jst.go.jp/article/jtst/3/2/3_2_254/_pdf/-char/en |
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